Aha finally more of these guys are being done, I swear im doing this as best as possible  
The family is still the same size but now they actually are different shades of yellow/orange so they are more unique  
*NOTE I did not watch any of the Equestria Girls movie or show so I have very little idea on what happened besides Sunset being reformed so this is entirely headcanon
 
FLASH SENTRY (BRAD)
 
After the disappearance of Twilight from the human world, Brad decided to write songs about her in hopes of her returning. While Twilight did return to the human world, she was only there to save them and no stay with him causing him to feel sad. After deciding to get over her, the shy and anxious Sunset shimmer tried to befriend him once again. They had a fairly rocky friendship as he was still skeptical over her being good again, after she proved herself to the entire school from defeating Sci-Twi and befriending her, he finally decided to give her trust and friendship. Their friendship wasn’t as bad as before but both of them were awkward around each other, after trying to chat with her and the others near her he slowly started to catch feelings for her again. After they left school, he began his journey as a musician in the human world, with Sunset and her friends always showing up, he confessed to her while during on of his tours and after she accepted it, they became a musical power couple always creating songs together and singing together.
 
SUNSET SHIMMER
 
After Twilight defeated her, she was taken under her wing on friendship to learn the true meaning of it. it was simple with the Mane 5 but with the person she previously dated Brad, they slowly went from a rocky friendship to a power couple of music. They got married with a music themed wedding and had their first child. Both Brad and Sunset spent alot of time with their children to the point she almost forgot about the Pony world, her original home. She took her children and her husband to the Pony World for the first time and they were nearly attacked by Tempest before Twilight stopped her. She got a chance to reconnect with Twilight and have both her family and Twilight’s family meet.
 
SATURN BLISS
 
Saturn is Sunset and Brad’s eldest child and daughter, She is a very confident pony who feels little to no shame. She was originally born in the Human World but ever since she was introduced to the Pony World, she spends most of her time there, even if it involves skipping school. She mainly enjoys to trying to help Moonlight, Twilights daughter feel more comfortable and joyful. While she enjoys her life within the human world with the friends she has made, she enjoys living there and learning different Pony things like flying and using ur hoofs. She is very interested in Astrology and about the different planets she learns about, both in Human and Pony world, she finds the different setups in the sky in the Pony World compared to the Human World is fascinating.
 
YING YANG
 
Ying is the second eldest child but youngest daughter of Sunset and Brad, She is quite knowledgeable  
on different languages and understanding them and even speaking them. She finds different languages interesting, she first learned Chinese hence he cutiemark being a Ying Yang. She prefers to live in the Human world than the Pony World but she does find Pony Languages interesting and studies them. She just prefers having hands and walking upright, even though the idea of having magic is fun she finds no use for it.
 
LAVENDER DAWN
 
Lavender is the youngest child and only son of Sunset and Brad, he is quite a clueless but excitable fellow. He has a super high interest in life and biology, specifically plants but enjoys animals as well. He looks very feminine for being a young colt, whether thats from the long curly hair, the flower he loves to wear of the golden locket of his best stallion friend who knows. He enjoys both worlds as they both show off amazing different things, whether its the normal animals and pets in the human world of the mythical beasts of the Pony world.